Design, Synthesis, and Characterization of Multi-Phase Quasicrystalline Alloys for Superior Wear & Corrosion Resistance
Abstract
Hybrid materials are a cornerstone technology for triblological applications because the weakness of each material can be made up and their strength can be improved. Material failure caused by the unpredictable wear is often catastrophic, which leads to damages of components and injuries of tens of thousands of people. To forecast and prevent failures such as wear, insight from properties and mechanisms must be obtained. The objective of this research is to carry on investigation into mechanical and chemical properties and tribological behaviors of the multi-phased quasicrystalline alloys. A variety of experimental approaches will be conducted. The first step is to design and develop a new class of quasicrystalline alloys with pure Al, Cu, and Fe (raw material) using a Texas A&M fabrication process. The developed quasicrystal alloys are to be mechanically and chemically characterized. The second step is to conduct the tribological investigation of the multi-phased quasicrystalline alloys in order to prove the virtue of the quasicrystal. As the third step, the corrosion test is to carried out with multi-phased quasicrystalline alloys. The corrosion resistance of the quasicrystal will be reveal. The quasicrystal alloys are expected to have a favorable wear resistance, crack resistance, and corrosion resistance as well due to quasicrystal phase. Final step is an optimization of the multi-phased quasicrystal alloys. The quasicrystal alloys’ mechanical and chemical properties and tribological performance will be adjusted by controlling the configuration of the quasicrystal phases in the alloy.
Based on the results, the relationship between microstructure and wear and corrosion performance will be statistically identified. An experimental equation in relationship between wear and configuration of phases will be established. This research will benefit the design and fabrication as well as the optimization of the desired performance of quasicrystalline alloys. Besides, it will support to understand the wear mechanism and predict the life-span of multi-phased alloys and composites Consequentially, these highly advanced quasicrystal alloys will be used in wide range of applications including automobile, ocean, biomedical, and energy industries.
Citation
Lee, Kyungjun (2019). Design, Synthesis, and Characterization of Multi-Phase Quasicrystalline Alloys for Superior Wear & Corrosion Resistance. Doctoral dissertation, Texas A&M University. Available electronically from https : / /hdl .handle .net /1969 .1 /195909.